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These four applets demonstrate effects on the power curve for the difference in means, the difference in proportions, the mean change, and the correlation coefficient. Each applet allows users to manipulate different...
These datasets come from the book "STAT LABS: Mathematical Statistics Through Applications." Below the link for each dataset are descriptions of the variables for that dataset. Datasets are in text format and address...
Richard Lowry of Vassar College has created this java script which calculates the areas under the curve of the normal distribution falling to the left of z, to the right of +z, and between z and +z. This page is v...
This page generates a graph of the sampling distribution of the difference between two means and displays the probabilities associated with that distribution. Users enter the population standard deviation and the...
This page, created by Richard Lowry of Vassar College, generates a graph of the sampling distribution of r, the Pearson correlation coefficient. Upon opening, the applet prompts for sample size greater than 6. The...

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